# Pratt & Whitney PT6-21

- Type: Engine model (FAA registry)
- Registry code: 52531
- Manufacturer (registry): P&W
- Model: PT6-21
- Engine type: Turbo-prop
- Power: 550 hp
- Installed in: 2 registered aircraft
- Page: https://openairdocs.org/engine/pratt-whitney-pt6-21

Model codes come from the FAA registry's reference file.

## ADs that may apply (OpenAirDocs)

Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft (2)

- [N546CN](https://openairdocs.org/aircraft/N546CN): [Cwn LLC](https://openairdocs.org/faa-owner/CWN%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1974, S/N LJ609
- [N612F](https://openairdocs.org/aircraft/N612F): [N612f LLC](https://openairdocs.org/faa-owner/N612F%20LLC), [Henderson, TN](https://openairdocs.org/faa-place/TN/Henderson), built 1989, S/N LJ1192

## NTSB investigations

None matched to aircraft with this engine model.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 20250707009009I](https://openairdocs.org/incident/20250707009009I), Jul 7, 2025: Beech C90A (N612F), Destin, FL, Minor damage. [privacy data omitted] Was attepmting land on runway 14 at kdts and encountered gusty crosswinds. On touchdown the aircraft was left of centerline and departed…

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